Nuclear Charge Radii of Silicon Isotopes
Kristian König, J. C. Berengut, Anastasia Borschevsky, Alex Brinson, B. A. Brown, Adam Dockery, Serdar Elhatisari, Ephraim Eliav, R. F. García Ruíz, J. D. Holt, B. S. Hu, J. Karthein, Dean Lee, Y. Z., Ulf-G. Meißner, K. Minamisono, Alexander V. Oleynichenko, Skyy Pineda, Sergey D. Prosnyak, Marten L. Reitsma, L. V. Skripnikov, A. R. Vernon, Andréi Zaitsevskii
Abstract
The nuclear charge radius of ^{32}Si was determined using collinear laser spectroscopy. The experimental result was confronted with ab initio nuclear lattice effective field theory, valence-space in-medium similarity renormalization group, and mean field calculations, highlighting important achievements and challenges of modern many-body methods. The charge radius of ^{32}Si completes the radii of the mirror pair ^{32}Ar-^{32}Si, whose difference was correlated to the slope L of the symmetry energy in the nuclear equation of state. Our result suggests L≤60 MeV, which agrees with complementary observables.